sdio_uart_shutdown(9)

💅 sdio_uart_shutdown(9) — like, the Kernel API Manual page you actually wanna read

okay so bestie, welcome to the Kernel API Manual page for sdio_uart_shutdown — she's short, she's sweet, and she's literally just here to stop hardware. no cap. 🎀

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✨ NAME ✨

sdio_uart_shutdown — stop hardware 🛑

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🌸 SYNOPSIS 🌸

void sdio_uart_shutdown (struct tty_port *tport );

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🦋 ARGUMENTS 🦋

• tport — the tty port you're shutting down, bestie. that's the whole vibe check. 💜

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💖 DESCRIPTION 💖

So what she does is deactivate a tty port. that's it, that's the function.

And here's the iconic part: the port locking guarantees us that this will only ever run if a successful matching activate already ran. the two of them are protected from each other by the internal locking, so they will not run at the same time — not even during a hangup event. periodt. 🔥

ngl the locking is doing the heavy lifting here and she ate. 💅

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/mmc/core/sdio_uart.c
• uart_dtr_rts(9)
• sdio_uart_activate(9)
• sdio_uart_install(9)
• sdio_uart_cleanup(9)

like, go read her friends too, iykyk 🫶

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okay that's the whole page, she's lowkey a legend ⭐ this one lives in ./drivers/mmc/core, dated October 2026 — mwah, thanks for reading, ily, bye! 💖🧚🌸